<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>测试</title>
	<style>
		.content{
			width: 640px;
			height: 1136px;
			background-color: yellow;
		}
	</style>
</head>
<body>

	<div class="content"></div>
	
</body>
</html>